My Single Plane Works!
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Pro
Joined: Dec 2002
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From: Rolling Meadows IL
My Single Plane Works!
I just finished my single plane conversion. Started right up. I made the plenum with a band saw, drill press and an air grinder. I had a shop weld it for me. The intake is a Holley EFI single plane. I know, I know but it was cheep on ebay and in the intake shoot out last year it kept up with a Mini Ram on a 383 until about 5800 rpm. The plenum is made out of 3in x 6in tubing welded to a ½ plate. Inside I have solid aluminum under the bolts from top to bottom to transfer the clamping force to the bottom plate and to guide the air into the manifold. No leaks so far. I also have a ¼ section of 6in tube to act as a radius in the rear of the plenum. I used a Moroso billet aluminum water neck and cut it down a ½ in on the top and bottom to fit under the plenum. It so easy to install it’s a joke. I have to get my insurance turned back on and take it for a ride.
Last edited by dave_85; Apr 18, 2006 at 03:56 PM.
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Pro
Joined: Dec 2002
Posts: 522
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From: Rolling Meadows IL
Plenum including welding $125, water neck $65, fuel hose and fittings $50, $16 for the Accel throttle bracket. I got the Holley intake with fuel rails and adj. regulator cheep off ebay but Summit has if for about $550.
The way I look at, I'm going to sell my Edelbrock TPI base and AS&M big tube runners and it pays for the change. That is if I like the way it runs.
The way I look at, I'm going to sell my Edelbrock TPI base and AS&M big tube runners and it pays for the change. That is if I like the way it runs.
Last edited by dave_85; Apr 18, 2006 at 08:34 PM.
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Pro
Joined: Dec 2002
Posts: 522
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From: Rolling Meadows IL
Originally Posted by pipe
Do ya have any pics of the bungs welded into the manifold that hold the injectors? who made the fuel rails? It's cool lookin job would like to see more pics of it. Pipe
Pipe
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 14
From: backwoods upstate ny
11 gold stars on a 1-10 scale for that ....even if it doesn't work (although i expect it will work fine) the appearance alone will send the ricers back for new diapers.
details on injector bungs and fuel rails please?
details on injector bungs and fuel rails please?
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Thread Starter
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Joined: Dec 2002
Posts: 522
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From: Rolling Meadows IL
Originally Posted by redrose
details on injector bungs and fuel rails please?
Burning Brakes
Joined: Jun 2005
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From: Wallingford Vermont
The intake is a Holley EFI single plane. I know, I know but it was cheep on ebay and in the intake shoot out last year it kept up with a Mini Ram on a 383 until about 5800 rpm.
Looks smokin'. Let me know how it performs!
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Joined: Dec 2002
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From: Rolling Meadows IL
This is how I got here. The car is a 85 4+3 Z51. I have 3.73 rear end, Pro Topline Iron Lighting 180cc heads, Crane 2030 cam, TPIS headers, 165 ECM with my chip, Zt2 wideband O2. I had an Edlebrock base and AS&M runners. With the TPI I had a hard time not spinning the tires out of the hole plus the power really drops off fast above 4800 rpm. I needed to redo the intake gaskets and just hated the idea of messing with the TPI again, although I am getting good at it. I really wanted a Stealth Ram but it looked like too many problems to overcome to get it to fit in the Vette. I saw a couple of guys running single planes on this site and figured it would be a cool winter project. I should have it on the road tomorrow.
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Joined: Dec 2002
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From: Rolling Meadows IL
Originally Posted by DanZ51
What "intake shoot out" are you referring too?
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Pro
Joined: Dec 2002
Posts: 522
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From: Rolling Meadows IL
I scanned it and set the regulator to give me the same BLM’s that I had before the swap. I did a short WOT run. With the TPI my A/F ratio was around 12.7 % with the single plane it’s around 13.4%. Time to burn a new chip.
